chromaticのsnapshotがいつ実行されるか調査

https://www.chromatic.com/docs/snapshots

snapshotの実行回数を基準に契約プラン、請求額の想定ができそうだけど、snapshotがどのようなタイミングで実行されるのか

Chromatic charges based on snapshots and browser coverage, respectively. Snapshots power UI Tests and UI Review. They are only taken when you enable “UI Review” or “UI Tests” for your project.
https://www.chromatic.com/docs/billing#snapshots

snapshotの実行はUI TestとUI Reviewが対象

Every time you run a build, we take one snapshot for each story. If you have 50 stories, Chromatic will take 50 snapshots. In addition, testing multiple viewports and browsers are also considered snapshots.
https://www.chromatic.com/docs/billing#snapshots

ビルド実行する度にstoryごとにsnapshot1回実行。
テスト対象のviewportとブラウザの分これに掛け合わされる。

Snapshots are counted at the account level. If your account has multiple projects, we sum the number of snapshots each project uses to get your total usage. Chromatic doesn’t break down billing per project.
https://www.chromatic.com/docs/billing#how-we-count-snapshots

アカウントごとでカウントされる

Chromatic uses your git history to decide how to check stories for changes for both UI Tests and UI Review.
https://www.chromatic.com/docs/branching-and-baselines

gitの履歴から変更UI TestおよびUI Reviewの実行対象の変更検知している？